I've currently using a AE500, but suspect, due to the image flickering, the bulb will shortly be going pop. I'm considering putting the price of the bulb towards upgrading to the AE700, but have a few question, which I hope somebody might be able to help me with. I've had quite a lot of problems with the AE500 with dust blobs... is this less of an issue with the AE700? Is the black/contrast greatly improved? My AE500 is wall mounted - are the screws on the bottom of the AE700 in the same places as the AE500? Thanks folks!